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3 years ago

Write a Paragraph Proof.

Mathematics

1 answer:

avanturin [10]3 years ago

3 0

The given states that line BC is congruent to line EC and line AC is congruent to line DC. By the vertical angles theorem, angle BCA is congruent to angle DCE. By SAS, triangle BCA is congruent to triangle DCE. Using CPCTC, it can be concluded that line BA is congruent to line ED.

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Evaluate the expression when a is -5 and y is 7<br> a-5y

Sonbull [250]

Answer:

The answer is -40

Step-by-step explanation:

<h3><u>Given</u>;</h3>

a = -5
y = 7

a – 5y

Now,

a – 5y

(-5) – 5(7)

-5 – 35 = -40

Thus, The answer is -40

<u>-TheUnknownScientist</u><u> 72</u>

8 0

3 years ago

Read 2 more answers

Solve for x.<br> 163 - x= -52<br> O A r = -215<br> B. X=-111<br> C. x = 111<br> D. x = 215

Eduardwww [97]

Answer:

Step-by-step explanation:

3 0

3 years ago

C D

denis23 [38]

Answer:

Option (4)

Step-by-step explanation:

Given system of equations is,

y = -x²- 4x - 3

y = 2x + 5

To get the solution of the system of equations algebraically,

2x + 5 = -x²- 4x - 3

Now combine like terms onto one side of the equation.

-x² - (4x + 2x) - (3 + 5) = 0

x² + 6x + 8 = 0

Then factorize the equation,

x² + 4x + 2x + 8 = 0

x(x + 4) + 2(x + 4) =0

(x + 2) (x + 4) = 0

x = -2, 4

Option (4) is the answer.

4 0

3 years ago

What is 2(5x+3)-6x=7x+30+5x<br> Please show work

earnstyle [38]

Answer: X=-3

Step-by-step explanation:

2(5x+3)-6x=7x+30+5x

10x+6-6x=7x+30+5x

4x-12x=30-6

-8x=24

-x=3

x=-3

5 0

3 years ago

Find the measure of supplementary angles with measures 2x degrees and 7x degrees

LenKa [72]

2x+7x= 180
9x=180
x=20

Plug the x value in to both expressions
2(20)=40
7(20)=140

Final answer: 40 degrees, 140 degrees

3 0

3 years ago